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Wednesday, May 2, 2012

TMR Mixers worth the investment, say beef producers

Despite high feed and grain prices, the use of TMR mixers on feeding and cow-calf operations is increasing due to greater returns. To maximize the benefits of a TMR mixer, there are multiple factors to consider. Jeff Jaderborg of the University of MN identified routine maintenance, loading sequence, mixing time, and minimum inclusion rate as essential ingredients to a high quality TMR.

Routine Maintenance

To reduce the potential for breakdowns and to ensure proper mixing, preventive maintenance should be performed weekly. Here are a few items that should be included in a TMR mixer maintenance schedule:

Remove twine and plastic from around augers.

Inspect auger knives and kicker plates for wear and fractures.

Check electronic scales for accuracy (at least annually).

Loading Sequence

Ingredients should be loaded in a specific sequence to provide optimal results (see diagram).

Do not load directly over center screw - small-inclusion ingredients and liquids may not be blended.

Small batches: make sure ingredients do not stick to side of mixer when loading

Mixing Time

Mixing time varies based on ration ingredients and mixing conditions.

Best to consult a nutritionist and request a Penn State shaker box test to determine mixing time.

Avoid ingredient inclusion at amounts less than five times the scale accuracy.

Use simple carriers to pre-mix small-inclusion ingredients so they can be properly mixed into the ration.

*Your nutritionist should conduct a Penn State shaker box test annually to analyze the distribution of ingredients and consistency of your mix. This simple test will help ensure that your cattle are consuming a nutrient-rich, well-balanced diet.